Black repertoire based on 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4. The author also covers Whites early alternatives up to the 4th move, like 3.cxd5, 3.Nc3, or 4.e3. Boris Avrukh is a grandmaster from Israel. He is an Olympiad gold medallist and analysis partner of World Championship finalists. Series Grandmaster Repertoire, volume 17. Further information about the book is available at qualitychess.co.uk